infix fun X.foo(param: String) = "foo after change to infix $param"
tailrec fun bar(param: String) = "bar after change to tailrec $param"

class X() {
    infix fun qux(param: String) = "qux after change to infix $param"
    tailrec fun muc(param: String) = "muc after change to tailrec $param"
}


